JP2007319827A - Measuring device and measuring method for quantity of chemical reaction heat - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a measuring device for quantity of chemical reaction heat, which safely, surely measures a reaction heat quantity, even if the reaction heat quantity is small or the reaction heat excessively rises; to attain measurement of wide range; and also to provide a measuring method. <P>SOLUTION: The measuring device for quantity of chemical reaction heat is provided with a computation processing device 9 which integrates heater output and a measuring period of time to compute a consumed heat quantity W<SB>1</SB>of a heater, when a heater output signal P output by a heating-controlling device 2 is input and the heater output is determined to be at least a threshold value by a determination means 91 which compares the heater output with the threshold value, or computes not only a difference in temperature of a heat medium B between the inlet 41 of a heat-exchanging jacket 4 and its outlet 42 but also a flow quantity by the input of a heat medium flow quantity signal R output by a heat medium flow quantity sensor 8 to integrate these values to compute a consumed heat quantity W<SB>2</SB>of the heater 21 when a variation per unit time in heater output quantity is at least a prescribed quantity. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an apparatus and a method for measuring the amount of reaction heat in a chemical reaction, and more particularly, safely and reliably even when the amount of reaction heat is small or when the reaction heat rises too much. The present invention relates to an apparatus and a method for measuring a heat of chemical reaction that can be measured and can realize a wide range of measurements.

  As is well known, in experiments involving chemical reactions such as polymerization reactions and condensation reactions, the speed of the chemical reaction is greatly affected by temperature, pressure, concentration, and other external conditions, so depending on the characteristics of the chemical reaction. These conditions need to be adjusted accurately and quickly. To do so, the heat of chemical reaction must first be accurately measured.

  Conventionally, in order to perform such a measurement, for example, a heat exchange jacket is provided around the reactor and the heat passing through the heat exchange jacket is assumed to have been used in the chemical reaction apparatus invented by the present applicant. There is disclosed one that increases or decreases the heat transfer area of the medium or measures the heat of chemical reaction from the temperature difference between the inlet and outlet of the heat exchange jacket (see, for example, Patent Document 1). ).

  However, in such an apparatus for measuring the amount of heat of reaction, since a partition plate exists between the heat exchange jacket and the reactor, it is easy to receive an error when the heat of reaction is small, and unavoidably heat transfer. There was a problem that time lag occurred and high-precision measurement could not be performed.

In addition, when rapid heat of chemical reaction occurs, the reaction temperature may increase irregularly, and it is difficult to accurately measure only the amount of heat of chemical reaction.
JP-A-8-131817 (page 4-6, FIG. 1-3)

  The present invention has been made in view of the above-mentioned drawbacks, and the object of the present invention is to measure safely and reliably even if the reaction heat amount is small or the reaction heat rises too much. An object of the present invention is to provide an apparatus and a method for measuring heat of chemical reaction that can perform a wide range of measurements.

  Means employed by the present inventor for solving the above-described problems will be described with reference to the accompanying drawings.

That is, the present invention comprises a reactor 1 containing a chemical agent A to be reacted;
A heating controller 2 provided in the reactor 1 and provided with a heater 21 for heating the chemical agent A in the reactor 1, and measuring the output of the heater 21 and transmitting it as a heater output signal P;
A reaction temperature sensor 3 that measures the current temperature of the chemical agent A in the reactor 1 and transmits a reaction temperature signal T ₁ ;
A heat exchange jacket 4 including an inlet 41 for supplying the heat medium B and an outlet 42 for discharging, which is an outer container containing at least the outer periphery of the container of the chemical drug A in the reactor 1;
A heating medium temperature adjustment mechanism 5 that allows the heating medium B to circulate through the inlet 41 and the outlet 42 of the heat exchange jacket 4 and adjusts the heating temperature of the heating medium B up and down;
A water level adjuster 6 capable of raising and lowering the water level of the heat medium B in the heat exchange jacket 4;
A heat medium temperature sensor 7 (71, 72) that measures the temperature of the heat medium B at the inlet 41 and the outlet 42 of the heat exchange jacket 4 and transmits the temperature as a heat medium temperature signal T ₂ · T ₃ ;
A heat medium flow rate sensor 8 capable of measuring the flow rate of the heat medium B flowing from the inlet 41 of the heat exchange jacket 4 and transmitting it as the heat medium flow rate signal R;
When the heater output signal P transmitted from the heating controller 2 is input and the heater output and the threshold value are compared, the determination means 91 compares the heater output and the measurement time when the threshold value is greater than the threshold value. While it is possible to calculate the heat consumption W _{1 of the} heater,
When below the threshold value, or when the increase / decrease width per unit time of this heater output is more than a predetermined value,
When both the heat medium temperature signal T ₂ transmitted from the heat medium temperature sensor 71 and the heat medium temperature signal T ₃ transmitted from the heat medium temperature sensor 72 are input, the inlet 41 and the outlet 42 of the heat exchange jacket 4 are input. The temperature difference of the heating medium B at both points is calculated, and the flow rate is calculated by inputting the heating medium flow rate signal R transmitted from the heating medium flow rate sensor 8, and these values are integrated and the heater 21 is integrated. Of heat consumption W ₂ can be calculated,
By adopting the technical means that configured by including an arithmetic processing unit 9 which is capable of converting the heat consumption W ₁ and / or W ₂ as reaction heat of a chemical agent material A, a chemical reaction calorimeter Was completed.

  In addition, in order to solve the above-mentioned problems, the present invention is a heating in which the heating medium temperature adjusting mechanism 5 can adjust the heating temperature of the heating medium B in the temperature adjusting tank 51 up and down as needed. A technical means for providing the heater H and the cooler C can be employed.

  Furthermore, in order to solve the above-mentioned problems, the present invention provides the water level adjuster 6 with the heat medium B sent from the temperature adjusting tank 51 of the heat medium temperature adjusting mechanism 5 in addition to the above means as necessary. It is possible to employ a technical means that includes a storage tank 61 for storage and raises and lowers the water level of the heat transfer medium B in the heat exchange jacket 4 by moving the storage tank 61 up and down by a lifting device 62.

In the present invention, the chemical agent A is accommodated in the reactor 1 and the heat medium B in the heat exchange jacket 4 including at least the outer periphery of the accommodating portion of the reactor 1 is brought to a predetermined water level by the water level adjuster 6. The current temperature of the chemical agent A in the reactor 1 is measured by the reaction temperature sensor 3 and transmitted to the arithmetic processing unit 9 as the reaction temperature signal T ₁ , and the heater 21 of the heating controller 2 is operated to keep the temperature constant. After
Start the chemical reaction of chemical agent A in the reactor 1,
In order to compensate the amount of reaction heat generated by this chemical reaction, the output of the heater 21 of the heating controller 2 is changed in strength, and the output of the heater 21 is measured and transmitted to the arithmetic processing unit 9 as a heater output signal P. The heater output and the threshold value are compared by the judging means 91,
When the heater output is greater than or equal to the threshold value, the heater output and the measurement time are integrated to calculate the heat consumption W by the arithmetic processing unit 9,
When the heater output falls below the threshold value, or when the increase / decrease width per unit time of the heater output exceeds a predetermined value, the heating medium temperature sensor 71 installed at the inlet 41 of the heat exchange jacket 4 type both of the heating medium temperature signal T ₃ for outgoing heating medium temperature sensor 72 installed in the heat medium temperature signal T ₂ and outlet 42 transmits, to calculate the temperature difference between the heating medium B at both these points And the heat medium flow signal R transmitted from the heat medium flow sensor 8 is inputted to calculate the flow rate, and these values are integrated to calculate the heat consumption W ₂ of the heater 21 by the arithmetic processing unit 9.
A chemical reaction calorie measurement method was completed by adopting a technical means for converting the consumed heat amount W ₁ and / or W ₂ as the reaction heat amount of the chemical drug A.

  Further, in order to solve the above problems, the present invention provides a heating medium in the temperature adjusting tank 51 by a heater H and a cooler C provided in the heating medium temperature adjusting mechanism 5 in addition to the above means as necessary. A technical means for adjusting the heating temperature of B to be raised or lowered can be adopted.

  Furthermore, in order to solve the above-mentioned problems, the present invention accommodates the heat medium B sent from the temperature control tank 51 of the heat medium temperature adjusting mechanism 5 in the water level adjuster 6 in addition to the above means as necessary. It is possible to employ a technical means for providing a storage tank 61 for raising and lowering the water level of the heat transfer medium B in the heat exchange jacket 4 by raising and lowering the storage tank 61 by an elevating device 62.

  By using the measuring device of the present invention, even if the reaction heat amount is small or the reaction heat is excessively increased, it can be measured safely and reliably, and a wide range of measurements can be realized. Can do. In addition, since the amount of change in power consumption is measured, it is not necessary to change the water level of the heating medium in accordance with the amount of heat of reaction, so it is possible to make a quick and accurate measurement. It can be said that there is something expensive.

  BEST MODE FOR CARRYING OUT THE INVENTION The best mode for carrying out the present invention will be described in more detail with reference to the drawings specifically shown below.

  An embodiment of the present invention will be described with reference to FIGS. 1 and 2. In the figure, what is indicated by reference numeral 1 is a reactor. This reactor 1 contains a chemical material A to be reacted. If necessary, a stirrer M is disposed and operated. The chemical agent A in the reactor 1 can be made uniform.

  Also, what is indicated by reference numeral 2 is a heating controller, and this heating controller 2 is provided in the reactor 1 and includes a heater 21 for heating the chemical agent A in the reactor 1, and The output (heat generation rate) of the heater 21 that changes every moment can be measured and transmitted as the heater output signal P. The heat generation rate can also be measured from the power consumption of the heater 21.

Furthermore, what is indicated by reference numeral 3 is a reaction temperature sensor, which can measure the current temperature of the chemical agent A in the reactor ₁ and transmit a reaction temperature signal T _1. .

  Furthermore, what is indicated by reference numeral 4 is a heat exchange jacket, and this heat exchange jacket 4 is an outer container that contains at least the outer periphery of the accommodating portion of the chemical drug A in the reactor 1, and the chemical drug A An inlet 41 for supplying the heat medium B to exchange heat with the outlet, and an outlet 42 for discharging.

  Furthermore, what is indicated by reference numeral 5 is a heat medium temperature adjusting mechanism, and this heat medium temperature adjusting mechanism 5 can circulate the heat medium B through the inlet 41 and the outlet 42 of the heat exchange jacket 4. The heating temperature of the heating medium B can be adjusted up and down. In the present embodiment, the heating medium temperature adjusting mechanism 5 can include a heater H and a cooler C that can adjust the heating temperature of the heating medium B in the temperature adjusting tank 51 up and down. The heating temperature can be made constant efficiently and kept at a stable heat removal temperature.

  Furthermore, what is indicated by reference numeral 6 is a water level adjuster, and this water level adjuster 6 can raise and lower the water level of the heat medium B in the heat exchange jacket 4. In the present embodiment, the water level adjuster 6 includes a storage tank 61 that stores the heat medium B sent from the temperature control tank 51 of the heat medium temperature control mechanism 5, and the storage tank 61 is moved up and down by the lifting device 62. By doing so, the water level of the heat medium B in the heat exchange jacket 4 can be raised and lowered.

Furthermore, what is indicated by reference numeral 7 (71 · 72) is a heat medium temperature sensor, and this heat medium temperature sensor 7 (71 · 72) is a heat exchanger at the inlet 41 and outlet 42 of the heat exchange jacket 4. Each temperature of the medium B can be measured and transmitted as a heat medium temperature signal T ₂ · T ₃ .

  Furthermore, what is indicated by reference numeral 8 is a heat medium flow sensor, and this heat medium flow sensor 8 measures the flow rate of the heat medium B flowing from the inlet 41 of the heat exchange jacket 4 to thereby determine the heat medium flow rate. The signal R can be transmitted.

Further, what is indicated by reference numeral 9 is an arithmetic processing unit, which receives the heater output signal P transmitted from the heating controller 2, and compares the heater output with a threshold value. the means 91, when it is more than threshold values can be calculated heat consumption W ₁ of the heater by integrating the measured time with the heater output.

On the other hand, when below the threshold value, or when the increase / decrease width per unit time of this heater output is a predetermined value or more,
When both the heat medium temperature signal T ₂ transmitted from the heat medium temperature sensor 71 and the heat medium temperature signal T ₃ transmitted from the heat medium temperature sensor 72 are input, the inlet 41 and the outlet 42 of the heat exchange jacket 4 are input. The temperature difference of the heating medium B at both points is calculated, and the flow rate is calculated by inputting the heating medium flow rate signal R transmitted from the heating medium flow rate sensor 8, and these values are integrated and the heater 21 is integrated. Of heat consumption W ₂ can be calculated,
The consumed heat amount W ₁ and / or W ₂ can be converted as the reaction heat amount of the chemical drug material A.

  Accordingly, a method for measuring the calorific value of the chemical reaction using the apparatus according to the present embodiment will be described below with reference to the flowchart of FIG.

  First, the chemical drug material A is accommodated in the reactor 1, and the heat medium B in the heat exchange jacket 4 including at least the outer periphery of the accommodating portion of the reactor 1 is set to a predetermined water level by the water level adjuster 6.

  In the present embodiment, the heating medium B in the temperature adjusting tank 51 is adjusted by the heater H and the cooler C provided in the heating medium temperature adjusting mechanism 5 in order to adjust the heating temperature of the heating medium B up and down. The heating temperature can be adjusted up and down.

  At this time, in this embodiment, the water level adjuster 6 is provided with a storage tank 61 for storing the heat medium B sent from the temperature control tank 51 of the heat medium temperature adjusting mechanism 5, and the storage tank 61 is moved up and down. By moving up and down by the device 62, the water level of the heat medium B in the heat exchange jacket 4 can be raised and lowered, and quick adjustment is possible.

Then, along with sending to the processing unit 9 as a reaction temperature signals T ₁ measures the current temperature of the chemical agent material A in the reactor 1 the reaction temperature sensor 3, the heater 21 of the heating controller 2 appropriately actuated by the temperature Keep constant.

  Thereafter, the chemical reaction of the chemical agent A in the reactor 1 is started. As a result, a change in the amount of reaction heat occurs, and the temperature rises or falls. In the present embodiment, a case where heat is generated by a chemical reaction will be described.

  Then, in order to compensate for the amount of reaction heat generated by this chemical reaction, the output of the heater 21 of the heating controller 2 is changed strongly and momentarily. Specifically, for the heating reaction, the amount of heat is canceled by weakening the output of the heater 21, and the output of the heater 21 that changes every moment is measured to obtain the heater output signal P as an arithmetic processing unit. 9, the heater output and the threshold value are compared by the judging means 91.

As a result of comparison, when the heater output is greater than or equal to the threshold value, it means that the reaction rate is moderate, and the arithmetic processing unit 9 integrates the heater output and the measurement time to calculate the heat consumption W _1. Can be calculated.

  Also, when the heater output falls below the threshold value, that is, when the output is very small and measurement is difficult, or when the increase / decrease width per unit time of this heater output exceeds a predetermined value (abrupt reaction Is processed by the arithmetic processing unit 9 as follows.

That is, the heat medium temperature signal T ₂ transmitted from the heat medium temperature sensor 71 installed at the inlet 41 of the heat exchange jacket 4 and the heat medium temperature signal T ₃ transmitted from the heat medium temperature sensor 72 installed at the outlet 42. Both are input to the arithmetic processing unit 9 to calculate the temperature difference of the heat medium B at these two points, and the heat medium flow rate signal R transmitted from the heat medium flow rate sensor 8 is input to calculate the flow rate. by integrating these values (and specific heat of appropriate heating medium B), the heat transfer medium B is calculated heat quantity (heat removal amount) lost to the corresponding amount of heat consumption W _2.

  When the increase / decrease width per unit time of the heater output exceeds a predetermined value, a risk such as overshoot occurs due to a sudden exothermic reaction. Therefore, in order to avoid danger, the heating medium B in the heat exchange jacket 4 is used. The liquid level can be raised to cool urgently. It should be noted that when the heating temperature, the heating medium flow rate, and the water level of the heating medium B are raised or lowered during the measurement, the measurement accuracy of the reaction heat amount may be slightly impaired.

As described above, only the heat consumption W ₁ or the heat consumption W ₂ , or depending on the reaction behavior, the heat consumption W ₁ and W ₂ are converted as the total reaction heat changed from the reference state of the chemical drug A. It can be done.

The present invention is generally configured as described above. However, the present invention is not limited to the illustrated embodiment, and various modifications can be made within the description of “Claims”. The reaction of the chemical agent A is not limited to an exothermic reaction but can also correspond to an endothermic reaction. Further, the heat consumption W ₁ or W ₂ can be calculated by automatically or manually switching the calculation method according to the result of the determination means 91 of the arithmetic processing device 9, both of which belong to the technical scope of the present invention.

Specific examples of the present invention are shown below.
[Experimental conditions]
First, the reactor has an internal volume of 500 cc, the water level of the jacket part is adjusted to 20%, the flow rate of the heating medium B is adjusted to 300 g / min, and the temperature is adjusted to a constant value so that the heat removal rate by the heating medium B is substantially constant. It is kept in. Chemical agent A uses methyl methacrylate monomer 60 g, water 300 g, emulsifier concentration 1 g / liter-water, water-soluble initiator concentration 1.25 g / liter-water, reaction temperature 50 ° C., stirring speed 400 rpm. After sufficiently deoxidizing the inside of the reactor, an aqueous initiator solution was added when the reaction temperature became constant at 50 ° C.

[Discussion]
In this example, as shown in FIG. 3, the heating rate of the heater is initially constant at 65.5 J / s, and is constant until 50 minutes have elapsed. It can be seen that the temperature rose to 50.07 ° C and remained at 50.00 ± 0.01 ° C in about 1 minute.

  Next, a slight increase in the heat generation rate is observed from around 84 minutes, which is due to the rapid increase in the heat of reaction. From about 86 minutes, the reaction temperature slightly decreases compared to the reaction set temperature, which is due to the rapid decrease in the heat generation rate. Thereafter, when the heat of reaction disappears, the exothermic rate returns to the initial reference state of 65.5 J / s. That is, the reaction heat accompanying the reaction is a value obtained by subtracting the heat generation rate of each elapsed time from the heat generation rate of 65.5 J / s in the standard state, and becomes the heat generation rate at the time of reaction.

  Thus, the exothermic rate accompanying reaction heat is calculated | required, The time of elapsed time 50 minutes was made into reaction start time, and the thing which plotted the exothermic rate with respect to elapsed time is shown in FIG. For reference, the polymerization rate calculated from the reaction heat of the monomer used is shown by a solid line.

In the figure, the polymerization rate determined by the gravimetric method was represented by (symbol □), but both coincided. Meanwhile, heat consumption W ₂ corresponding to the heat removal rate has been constant at 55 J / s, this is because the heat dissipation rate which is discharged from the reactor surface and the like is constant.

In addition, the calculation method etc. of the heat balance of the Example of this invention are as follows.
(1) heat consumption W ₁ can be determined from the voltage value of the heating controller 2 is a heater output (heating rate) and the resistance value of the heater.
(2) heat consumption W ₂ is the heat removal rate due to the heat medium, the temperature difference between the heating medium B at both points of the inlet 41 and outlet 42 of the heat exchange jacket 4 and the flow rate, and the product of the heating medium specific heat Calculated. The heat release rate represents the release of heat from the reactor surface or the like.

It is the schematic showing the apparatus of embodiment of this invention. It is a flowchart of embodiment of this invention. It is a graph showing the experimental data of the Example of this invention. It is a graph showing the experimental data of the Example of this invention.

Explanation of symbols

1 Reactor M Stirrer 2 Heating controller
21 Heater P Heater output signal 3 Reaction temperature sensor T ₁ Reaction temperature signal 4 Heat exchange jacket
41 Inlet
42 Outlet 5 Heating medium temperature control mechanism
51 Temperature control tank H Heater C Cooler 6 Water level adjuster
61 Containment tank
62 Elevator 7 (71 ・ 72) Heat medium temperature sensor T ₂・ T ₃ Heat medium temperature signal 8 Heat medium flow sensor R Heat medium flow signal 9 Arithmetic processing unit
91 Judgment means A Chemical material B Heat medium W ₁・ W ₂ Heat consumption

Claims (6)

A reactor 1 containing a chemical agent A to be reacted;
A heating controller 2 provided in the reactor 1 for heating the chemical agent A in the reactor 1 and measuring the output of the heater 21 and transmitting it as a heater output signal P;
A reaction temperature sensor 3 that measures the current temperature of the chemical agent A in the reactor 1 and transmits a reaction temperature signal T ₁ ;
A heat exchange jacket 4 including an inlet 41 for supplying the heat medium B and an outlet 42 for discharging, which is an outer container containing at least the outer periphery of the container of the chemical drug A in the reactor 1;
A heating medium temperature adjustment mechanism 5 that allows the heating medium B to circulate through the inlet 41 and the outlet 42 of the heat exchange jacket 4 and adjusts the heating temperature of the heating medium B up and down;
A water level adjuster 6 capable of raising and lowering the water level of the heat medium B in the heat exchange jacket 4;
A heat medium temperature sensor 7 (71, 72) that measures the temperature of the heat medium B at the inlet 41 and the outlet 42 of the heat exchange jacket 4 and transmits the temperature as a heat medium temperature signal T ₂ · T ₃ ;
A heat medium flow rate sensor 8 capable of measuring the flow rate of the heat medium B flowing from the inlet 41 of the heat exchange jacket 4 and transmitting it as the heat medium flow rate signal R;
When the heater output signal P transmitted from the heating controller 2 is input and the heater output and the threshold value are compared, the determination means 91 compares the heater output and the measurement time when the threshold value is greater than the threshold value. While it is possible to calculate the heat consumption W _{1 of the} heater,
When below the threshold value, or when the increase / decrease width per unit time of this heater output is more than a predetermined value,
When both the heat medium temperature signal T ₂ transmitted from the heat medium temperature sensor 71 and the heat medium temperature signal T ₃ transmitted from the heat medium temperature sensor 72 are input, the inlet 41 and the outlet 42 of the heat exchange jacket 4 are input. The temperature difference of the heating medium B at both points is calculated, and the flow rate is calculated by inputting the heating medium flow rate signal R transmitted from the heating medium flow rate sensor 8, and these values are integrated and the heater 21 is integrated. Of heat consumption W ₂ can be calculated,
A chemical reaction calorie measuring device comprising the arithmetic processing device 9 capable of converting the consumed heat amount W ₁ and / or W ₂ as the reaction heat amount of the chemical drug A.   The chemical reaction according to claim 1, wherein the heating medium temperature adjusting mechanism (5) includes a heater (H) and a cooler (C) that can adjust the heating temperature of the heating medium (B) in the temperature adjusting tank (51). Calorimeter.   The water level adjuster 6 includes a storage tank 61 that stores the heat medium B sent from the temperature control tank 51 of the heat medium temperature control mechanism 5, and the heat exchange is performed by moving the storage tank 61 up and down by a lifting device 62. The chemical reaction calorimeter according to claim 1 or 2, wherein the water level of the heating medium (B) in the jacket (4) can be raised and lowered. The chemical agent A is accommodated in the reactor 1, and the heat medium B in the heat exchange jacket 4 including at least the outer periphery of the accommodating portion of the reactor 1 is set to a predetermined water level by the water level adjuster 6, while the reaction temperature sensor 3 After measuring the current temperature of the chemical agent A in the reactor 1 and sending it as a reaction temperature signal T ₁ to the arithmetic processing unit 9 and operating the heater 21 of the heating controller 2 to make the temperature constant,
Start the chemical reaction of chemical agent A in the reactor 1,
In order to compensate the amount of reaction heat generated by this chemical reaction, the output of the heater 21 of the heating controller 2 is changed in strength, and the output of the heater 21 is measured and transmitted to the arithmetic processing unit 9 as a heater output signal P. The heater output and the threshold value are compared by the judging means 91,
When the heater output is greater than or equal to the threshold value, the heater output and the measurement time are integrated to calculate the heat consumption W by the arithmetic processing unit 9,
When the heater output falls below the threshold value, or when the increase / decrease width per unit time of the heater output exceeds a predetermined value, the heating medium temperature sensor 71 installed at the inlet 41 of the heat exchange jacket 4 type both of the heating medium temperature signal T ₃ for outgoing heating medium temperature sensor 72 installed in the heat medium temperature signal T ₂ and outlet 42 transmits, to calculate the temperature difference between the heating medium B at both these points And the heat medium flow signal R transmitted from the heat medium flow sensor 8 is inputted to calculate the flow rate, and these values are integrated to calculate the heat consumption W ₂ of the heater 21 by the arithmetic processing unit 9.
A calorimetric calorific value measuring method, wherein the calorific value W ₁ and / or W ₂ is converted as a calorific value of the chemical drug A.   The chemical reaction calorimetry according to claim 4, wherein the heating temperature of the heating medium B in the temperature adjusting tank 51 is raised and lowered by the heater H and the cooler C provided in the heating medium temperature adjusting mechanism 5. Method.   In the water level adjuster 6, a storage tank 61 is provided for storing the heat medium B sent from the temperature control tank 51 of the heat medium temperature control mechanism 5, and the heat exchange jacket is moved up and down by the lift device 62. 6. The chemical reaction calorimetry method according to claim 4 or 5, wherein the water level of the heating medium B in the heating and cooling medium 4 is raised and lowered.

Images